{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"1.5SMCJ18CA","brand":"Diotec Semiconductor","brandSlug":"diotec-semiconductor","productSlug":"1.5SMCJ18CA","canonicalUrl":"https://icboms.com/diotec-semiconductor/1.5SMCJ18CA","factsUrl":"https://icboms.com/api/mcp/products/1.5SMCJ18CA","rawCanonicalId":null},"summary":{"shortDescription":"Diotec Semiconductor Zener TVS diode, 1.5SMCJ18CA, 18V reverse standoff, 29.2V clamping max, 51.4A peak pulse, 1.5kW peak pulse power, surface mount SMC/DO-214AB.","salesMarkdown":"## What the 1.5SMCJ18CA does on a board The 1.5SMCJ18CA is a bidirectional Zener-based TVS (transient voltage suppressor) in the SMC/DO-214AB package — the standard 2-pin body for board-level protection on the secondary side of power rails and low-speed signal lines. It clamps a surge to 29.2 V maximum at the 51.4 A peak pulse current rating, while allowing normal operation up to the 18 V reverse standoff level — so a 24 V nominal rail that sees transients stays within the clamping ceiling without conducting during normal operation. ## Key ratings for selection A lower clamping voltage means less stress on the downstream load; 29.2 V at 51.4 A gives a 568 Ω dynamic impedance at the peak current point, which is the resistance the protected circuit sees during the clamping event. Operating junction temperature runs to 150 °C, so the part handles the thermal soak from a clamping event and still retains margin in enclosed or poorly ventilated enclosures — derate the peak pulse current per the temperature curves if the board runs hot in steady state.","metaTitle":"1.5SMCJ18CA TVS Diode, 18V Standoff, 1.5kW Peak","metaDescription":"Diotec 1.5SMCJ18CA bidirectional TVS diode, 18V standoff, 29.2V clamping at 51.4A, 1.5kW peak pulse, SMC/DO-214AB. Active production — quoted to order.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":"Active","categoryPath":["Circuit Protection"],"specifications":{"Mfr":"Diotec Semiconductor","Type":"Zener","Series":"-","Package":"Strip","Applications":"General Purpose","Mounting Type":"Surface Mount","Package / Case":"DO-214AB, SMC","Product Status":"Active","lifecycle_stage":"unknown","Power - Peak Pulse":"1500W (1.5kW)","Operating Temperature":"-50°C~150°C(TJ)","Power Line Protection":"No","Bidirectional Channels":"1","Capacitance @ Frequency":"-","Supplier Device Package":"SMC/DO-214AB","Voltage - Breakdown (Min)":"20V","Voltage - Clamping (Max) @ Ipp":"29.2V","Voltage - Reverse Standoff (Typ)":"18V","Current - Peak Pulse (10/1000µs)":"51.4A"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$0.8068","stockQuantity":0,"priceTiers":null},"links":{"datasheetUrl":"https://cdn.icboms.com/3fb0502b23c3703cafef426b7b2bf7e5.pdf","sourceUrl":null},"ai":{"faq":[{"question":"What package does the 1.5SMCJ18CA come in?","answer":"The part ships on strip packaging in the SMC (DO-214AB) surface-mount body — the two-tab, rectangular package with a 3.95 mm body length."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/diotec-semiconductor/1.5SMCJ18CA","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/diotec-semiconductor/1.5SMCJ18CA when reusing this data. Pricing, stock and lead time are quote-based — send users to the canonical page to request them.","lastUpdated":"2026-08-11T15:49:49.435Z","lastPublished":"2026-08-11T15:49:49.435Z","indexable":true}}